This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
| n | a(n) |
|---|---|
| 0 | 8 |
| 1 | 62 |
| 2 | 440 |
| 3 | 3086 |
| 4 | 21608 |
| 5 | 151262 |
| 6 | 1058840 |
| 7 | 7411886 |
| 8 | 51883208 |
| 9 | 363182462 |
| 10 | 2542277240 |
| 11 | 17795940686 |
| 12 | 124571584808 |
| 13 | 872001093662 |
| 14 | 6104007655640 |
| 15 | 42728053589486 |
| 16 | 299096375126408 |
| 17 | 2093674625884862 |
| 18 | 14655722381194040 |
| 19 | 102590056668358286 |